moved middleware into more relevant location. Adding send test notifications handler. making sure that config is available from web handler functions.

webapp/backend/pkg/web/middleware/config.go

@@ -0,0 +1,13 @@
+package middleware
+
+import (
+	"github.com/analogj/scrutiny/webapp/backend/pkg/config"
+	"github.com/gin-gonic/gin"
+)
+
+func ConfigMiddleware(appConfig config.Interface) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Set("CONFIG", appConfig)
+		c.Next()
+	}
+}